A181611 - cp's OEIS frontend

A181611 Position of rightmost zero in 2^n (including leading zero).

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	2
7	3
8	3
9	3
10	2
11	2
12	2
13	4
14	5
15	5
16	5
17	2
18	6
19	6
20	5
21	5
22	1
23	1
24	8
25	8
26	4
27	9
28	9
29	3
30	8
31	10
32	10
33	10
34	11
35	11
36	11
37	12
38	4
39	12
40	11
41	8
42	1
43	1
44	5
45	5
46	12
47	12
48	3
49	15
50	7
51	16
52	3
53	3
54	7
55	8
56	8
57	8
58	12
59	7
60	7
61	10
62	1
63	1
64	7
65	4
66	4
67	21
68	13
69	7
70	4
71	4
72	22
73	6
74	6
75	4
76	23
77	24
78	13
79	2
80	4
81	25
82	1
83	1
84	11
85	6
86	26
87	3
88	2
89	12
90	12
91	12
92	11
93	14
94	14
95	23
96	3
97	3
98	4
99	4
100	4
101	3
102	1
103	1
104	2
105	2
106	2
107	6
108	6
109	8
110	2
111	2
112	2
113	3
114	3
115	3
116	17
117	2
118	5
119	6
120	6
121	6

[1, 1, 1, 2, 2, 2, 3, 3, 3, 2, 2, 2, 4, 5, 5, 5, 2, 6, 6, 5, 5, 1, 1, 8, 8, 4, 9, 9, 3, 8, 10, 10, 10, 11, 11, 11, 12, 4, 12, 11, 8, 1, 1, 5, 5, 12, 12, 3, 15, 7, 16, 3, 3, 7, 8, 8, 8, 12, 7, 7, 10, 1, 1, 7, 4, 4, 21, 13, 7, 4, 4, 22, 6, 6, 4, 23, 24, 13, 2, 4, 25, 1, 1, 11, 6, 26, 3, 2, 12, 12, 12, 11, 14, 14, 23, 3, 3, 4, 4, 4, 3, 1, 1, 2, 2, 2, 6, 6, 8, 2, 2, 2, 3, 3, 3, 17, 2, 5, 6, 6, 6]

cp's OEIS Frontend

A181611 Position of rightmost zero in 2^n (including leading zero).

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	2
7	3
8	3
9	3
10	2
11	2
12	2
13	4
14	5
15	5
16	5
17	2
18	6
19	6
20	5
21	5
22	1
23	1
24	8
25	8
26	4
27	9
28	9
29	3
30	8
31	10
32	10
33	10
34	11
35	11
36	11
37	12
38	4
39	12
40	11
41	8
42	1
43	1
44	5
45	5
46	12
47	12
48	3
49	15
50	7
51	16
52	3
53	3
54	7
55	8
56	8
57	8
58	12
59	7
60	7
61	10
62	1
63	1
64	7
65	4
66	4
67	21
68	13
69	7
70	4
71	4
72	22
73	6
74	6
75	4
76	23
77	24
78	13
79	2
80	4
81	25
82	1
83	1
84	11
85	6
86	26
87	3
88	2
89	12
90	12
91	12
92	11
93	14
94	14
95	23
96	3
97	3
98	4
99	4
100	4
101	3
102	1
103	1
104	2
105	2
106	2
107	6
108	6
109	8
110	2
111	2
112	2
113	3
114	3
115	3
116	17
117	2
118	5
119	6
120	6
121	6

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	2
7	3
8	3
9	3
10	2
11	2
12	2
13	4
14	5
15	5
16	5
17	2
18	6
19	6
20	5
21	5
22	1
23	1
24	8
25	8
26	4
27	9
28	9
29	3
30	8
31	10
32	10
33	10
34	11
35	11
36	11
37	12
38	4
39	12
40	11
41	8
42	1
43	1
44	5
45	5
46	12
47	12
48	3
49	15
50	7
51	16
52	3
53	3
54	7
55	8
56	8
57	8
58	12
59	7
60	7
61	10
62	1
63	1
64	7
65	4
66	4
67	21
68	13
69	7
70	4
71	4
72	22
73	6
74	6
75	4
76	23
77	24
78	13
79	2
80	4
81	25
82	1
83	1
84	11
85	6
86	26
87	3
88	2
89	12
90	12
91	12
92	11
93	14
94	14
95	23
96	3
97	3
98	4
99	4
100	4
101	3
102	1
103	1
104	2
105	2
106	2
107	6
108	6
109	8
110	2
111	2
112	2
113	3
114	3
115	3
116	17
117	2
118	5
119	6
120	6
121	6

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	2
7	3
8	3
9	3
10	2
11	2
12	2
13	4
14	5
15	5
16	5
17	2
18	6
19	6
20	5
21	5
22	1
23	1
24	8
25	8
26	4
27	9
28	9
29	3
30	8
31	10
32	10
33	10
34	11
35	11
36	11
37	12
38	4
39	12
40	11
41	8
42	1
43	1
44	5
45	5
46	12
47	12
48	3
49	15
50	7
51	16
52	3
53	3
54	7
55	8
56	8
57	8
58	12
59	7
60	7
61	10
62	1
63	1
64	7
65	4
66	4
67	21
68	13
69	7
70	4
71	4
72	22
73	6
74	6
75	4
76	23
77	24
78	13
79	2
80	4
81	25
82	1
83	1
84	11
85	6
86	26
87	3
88	2
89	12
90	12
91	12
92	11
93	14
94	14
95	23
96	3
97	3
98	4
99	4
100	4
101	3
102	1
103	1
104	2
105	2
106	2
107	6
108	6
109	8
110	2
111	2
112	2
113	3
114	3
115	3
116	17
117	2
118	5
119	6
120	6
121	6